"Drive Distance" in Direct Mode

[dunnor]

I have a pen plotter program that I've come back to.  It works virtually.  The Vi sends out: a Pen Up or Down number, an X axis number, and a Y axis number. These last two numbers are distances for lines that make up letters.  I don't know if I have an up to date LabVIEW add on for NXT Direct Mode Programming.

My vi might work if I could use a couple of "Drive Distance Motors"  in Direct Mode.  Do they exist?  Also,  What is the limit on how big a vi can be?  How many structures can one use ?  Is memory the only consideration?

[garrett8357]

Hi dunnor,

A new version of the MINDSTORMS Module is available for download here: https://decibel.ni.com/content/docs/DOC-15615 . 

What type of motor are you controlling? In the previous version of the MINDSTORMS NXT Module, the drive distance function for LEGO motors was available on the I/O>>Complete>>LEGO Motors pallette. The drive distance function for third party motors was available on the Third Party Motors palette. In the newer version, both share a drive distance function in the I/O>>Motors palette. 

A direct mode program is one with a PC target. There is no limit for the size or number of structures in a direct mode program. A remote mode program is limited by the available memory on the brick.

- Gary

[dunnor]

You asked about the type of motor. I've used the three servo motors that come with the Lego NXT Mindstorm Education Set. I wrote the attached program for a Lego Pen Plotter I saw on YOUTUBE. I'll see if I can attach a picture. The name of the designer of the Pen Plotter is with my saved emails. I regret I cannot give you his name while I'm writing this. If you need it let me know.

Thanks for reading and responding to my message
N.D.

[garrett8357]

What version of the LabVIEW Module for LEGO MINDSTORMS are you using? You can find it in the Help menu.

[dunnor]

I have LabVIEW 2009 student version 9.0.  I don't know what version the NXT LavVIEW Add ON is.  My nephew sometimes programs in the G software that came with our NXT Mindstorms Education Set.  The LabVIEW Add On came from a CD that came with a LabVIEW NXT Textbook by Michael Gaspri (If I remember his name right?).  I'm pretty sure I update once after I installed the CD software.

[dunnor]

I went to Help and looked under About NXT Module, and it said, "NI LabVIEW 2009 NXT Module.

I sounds like an update might have what I'm looking for.

Thank you for your time

ND

[garrett8357]

Yeah, I'm not sure how to drive a distance in the 2009 version. Sorry about that.